Table of Contents
service robots that serve food in restaurants and guide visitors through public facilities have become a familiar part of everyday life. These robots continue to evolve, easing the burden of repetitive tasks and improving operational efficiency on site.
Early support robots were optimized for specific, mobility based tasks such as transport or cleaning. But as service environments have diversified and expectations for automation have risen, robots are now expected to perform more flexible, multi step tasks.
This shift is also setting new standards for robot hardware design. To move reliably in spaces shared with people while carrying out a range of tasks, a robot’s shape, joint structure, and drive unit performance all need to be considered together.
In this article, we’ll look at how the way support robots are being used is changing, and explore why robot structure and compact drive units matter more than ever in responding to that change.
What Is a Service Robot?
A service robot is a robot that supports on-site operations by performing repetitive tasks in spaces where people live or work. Unlike industrial robots, which carry out repetitive tasks within a fixed area, support robots move autonomously through spaces shared with people, sense their surroundings, and carry out tasks according to the situation. To fit this kind of operating environment, support robots are designed to minimize their spatial footprint while maximizing work efficiency.
As society and technology continue to change, the role and scope of assistive robots have steadily expanded. With contactless service becoming the norm and demand for automation on the rise, robots are being deployed in more environments, and the tasks they need to handle are growing more complex. As a result, robot structures that can carry out multiple tasks in sequence and adapt flexibly to changing environments are becoming increasingly important.
How Are Service Robots Evolving?
Today, support robots are mainly used for basic transport tasks, serving food in restaurants or delivering supplies in hospitals and public facilities. Carrying items along a set route to their destination helps reduce the repetitive work once done by people and improves operational efficiency on site.
As the fields and range of tasks for service robots expand and user needs diversify, robots are evolving to interact with their surroundings, combining movement with object manipulation. Existing support robots have mostly specialized in single tasks like transport, which means placement or organizing work after delivery still has to be handled by a person or separate equipment.
This kind of setup can break up the workflow and require extra staff and equipment, which lowers operational efficiency. Solving this calls for a robot structure that can move safely through narrow, complex, human centered spaces while smoothly carrying out everything from transport to object manipulation.
For example, when a task calls for picking up an object or placing it precisely, a robotic arm style structure can be used. With this kind of structure, a service robot can use its mobility to reach the work site and carry out the necessary task on its own, offering a more flexible level of service.
Making this work reliably requires robot hardware designed for the purpose. In particular, implementing motions that directly handle objects requires the shoulder, elbow, wrist, and other joints to move together in a coordinated way, and each joint needs to deliver enough force reliably. Meeting this requirement makes the role of the drive unit inside each robot joint even more important.
Thin Actuator Technology for Next Generation Service Robots
One of the key elements that determines how a robot joint moves is the drive unit built into that joint. People create natural motion through the movement of joints and muscles, but robots rely on the actuators fitted to each joint to produce movement. An actuator converts a control system’s signal into physical motion, allowing a robot joint to move in the intended direction and at the intended speed. It’s a core drive component.
When designing robot hardware meant to perform human like motion, the size and weight of the actuator become critical factors. As an actuator grows larger, the joint section becomes thicker and heavier, which can affect not only the structure of the robot’s arms and legs but also its overall shape and movement. For a robot to achieve natural, human like motion, thin actuator technology that fits within a limited joint space is essential.
Bonsystems’ BCSA series was developed with exactly this requirement in mind. Built on a thin, compact structure, it helps reduce the thickness of the joint section while still delivering the torque and motion stability a robot needs.
The BCSA series is built on a pinless cycloid structure, designed to preserve the load distribution and durability of a traditional cycloid structure while also improving manufacturability. This design keeps the core performance of a conventional cycloidal reducer while reducing the number of pin components. That, in turn, reduces the overall part count, simplifies assembly, and lowers the variation that can occur during assembly, helping maintain consistent production quality.
Thanks to this thin structure and high drive performance, BCSA V4 is well suited to robot designs that need stable movement within a limited space. As the role of service robots keeps expanding, and as they move into more personal settings like the home, hardware that balances space efficiency with drive performance will only become more important.
Through the BCSA series, we offer actuator solutions built to support a wide range of robot hardware designs. If you’re developing a service robot, a humanoid robot, or any other product and are curious whether BCSA V4 could be a fit, please reach out to us through our website.
FAQ
Q. What’s the difference between a service robot and an industrial robot?
Industrial robots operate within a fixed area, performing repetitive tasks to boost production efficiency. assistive robots, on the other hand, work within spaces where people live and work, so they need to move autonomously while accounting for their surroundings and adapting to a range of environments. Because of this, assistive robots are often designed to be compact and slim, so they can respond flexibly even in unpredictable settings.
Q. How is the role of support robots changing?
As the spaces and purposes for support robots multiply, a robot that performs only a single function can no longer keep up with everything that’s needed. As a result, there’s growing demand for robots that go beyond simple movement and transport, and can directly manipulate objects and carry out continuous actions in response to their surroundings. This shift is driving greater interest in robot structures capable of working in ways similar to people.
Q. What becomes possible when a robotic arm is added to a mobile service robot?
Traditional support robots have focused on carrying items to a set location, with the work after arrival, such as placement or sorting, often left to a person or separate equipment. Adding a robotic arm allows movement and object manipulation to happen within a single system, so the robot can carry out any additional work needed after delivering an item. This broadens what a robot can do and lays the groundwork for using it across a wider range of service settings.
Q. What hardware requirements does a robot need to perform a variety of tasks?
For a support robot to pick up or move objects and handle other varied tasks, it needs reliable joint drive performance, and the actuator is the key component behind that performance. An actuator delivers the torque and speed a joint needs, allowing the robot to produce the intended movement, and it supplies the force required to handle objects or maintain posture. Because assistive robots operate in spaces shared with people, their actuators need a thin structure that can still deliver the necessary force in a small size.
Q. What advantages does the BCSA cycloid actuator bring to robot hardware development?
BCSA is an actuator that combines a thin structure with high torque performance, enabling efficient robot designs even within limited space. This gives designers more freedom when it comes to a robot’s outward form and internal component layout. It also applies a cycloidal reduction structure, allowing stable operation even in robot environments with repetitive motion and constantly changing loads. With these strengths, BCSA can help achieve both design freedom and drive stability in robot designs where space efficiency matters.
References
- service robotics Global Market Trend Report (Seoul Science and Technology Information System, 2024)
- There’s a Reason We Make Actuators Thinner (Bonsystems Global YouTube, 2025)
- Holding Parts with One Arm, Assembling and Packing with the Other, Handling Even Advanced Snap-Fits with Ease (Chosun Economy, 2024)
- service robots, Robots Leading the Next Growth Engine for the Service Industry (KT Enterprise, 2021)
- “The Professional service robot Market Will Reach 189 Trillion Won by 2030” (Robot Newspaper, 2025)
